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Finding the Fourth Proportional to 888,388.75, 1,226,005.73 and 485,980.75

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Solution

The fourth proportional to 888,388.75, 1,226,005.73 and 485,980.75 is: 670,669.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,388.75 : 1,226,005.73 = 485,980.75 : x
  2. Step 2: Convert to fraction form
    888,388.75/1,226,005.73 = 485,980.75/x
  3. Step 3: Cross multiply
    888,388.75x = 1,226,005.73 × 485,980.75
  4. Step 4: Simplify right side
    888,388.75x = 595,815,184,169.70
  5. Step 5: Solve for x
    x = 595,815,184,169.70/888,388.75
  6. Step 6: Final answer
    x = 670,669.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.